Linear Algebra

I started sitting in on S312 (Linear Algebra) after Spring Break. I'm hoping to take and get at least a B on the final, which would let me exempt the class, if I decide to pursue a Math major. So far, I've been too lazy to buy the textbook. I just found an online textbook today that is amazing! It's so professionally done, but 100% free. If anyone wants to look into linear algebra, here's a pretty good book: http://joshua.smcvt.edu/linearalgebra/